Vi skal gå om bord på færgen om en time.

Skal often means more than just strict obligation.

In this sentence, Vi skal gå om bord ... most naturally means something like:

• We are to board ...
• We’re supposed to board ...
• We’ll be boarding ...
• We have to board ...

So yes, skal can mean must, but here it often sounds more like a planned or required next step, not necessarily a harsh command.

Compare:

• Vi skal gå om bord om en time. = We’re due / supposed to board in an hour.
• Vi må gå om bord om en time. = We are allowed / have to board in an hour, depending on context.
• Vi vil gå om bord om en time. = We want to board in an hour / we will board, but this is less natural for this kind of scheduled situation.

Gå om bord is a set expression meaning to go on board / to board a ship, ferry, plane, etc.

Literally:

• gå = go / walk
• om bord = on board

But you should learn gå om bord as one expression.

Examples:

• Vi går om bord nu. = We’re boarding now.
• Passagererne skal gå om bord kl. 14. = The passengers are to board at 2 PM.

This is much more natural in Danish than translating English board directly.

The two instances of om do not mean the same thing.

1. om in gå om bord
   This is part of a fixed expression: gå om bord = board / go on board.

2. om in om en time
   Here om means in, when talking about time in the future.

So:

• gå om bord = board
• om en time = in an hour

This repetition is completely normal in Danish.

Danish often uses på with forms of transport, especially when the idea is on board or travelling by that vehicle.

So:

• på færgen = on the ferry
• på bussen = on the bus
• på toget = on the train
• på flyet = on the plane

I færgen would suggest being physically inside it, but in many normal travel contexts Danish prefers på.

In this sentence, på færgen is the natural choice because we are talking about boarding and being aboard the ferry.

Because om bord tells you the action boarding, while på færgen tells you what you’re boarding.

So:

• gå om bord = board
• gå om bord på færgen = board the ferry

You can say just:

• Vi skal gå om bord om en time.

if it is already obvious what vehicle or vessel you mean.

But adding på færgen makes it explicit.

Færgen is the definite form: the ferry.

In Danish, definiteness is usually added to the end of the noun:

• en færge = a ferry
• færgen = the ferry

The sentence uses færgen because it refers to a specific ferry that speaker and listener already know about.

This is very common in Danish. Compare:

• en bil = a car
• bilen = the car

Because time is a common gender noun in Danish, so it takes en.

• en time = an hour
• timen = the hour

Danish nouns are mainly either:

• en-words (common gender)
• et-words (neuter)

Time is an en-word.

Yes, you can, but the nuance changes slightly.

• Vi skal gå om bord på færgen om en time.
  = We are supposed / scheduled / required to board in an hour.

• Vi går om bord på færgen om en time.
  = We board / are boarding the ferry in an hour.

The version with skal often sounds a little more like a plan, instruction, or scheduled obligation.
The version without skal sounds more like a simple future arrangement or statement of fact.

Both can be correct depending on context.

Om en time means in an hour, referring to a point in the future.

Examples:

• Vi tager af sted om ti minutter. = We’re leaving in ten minutes.
• Hun kommer om en uge. = She’s coming in a week.
• Mødet begynder om lidt. = The meeting starts in a little while.

This is different from English learners’ first instinct to use something like i en time, but:

• om en time = in an hour, one hour from now
• i en time = for an hour, duration

So:

• Vi skal gå om bord om en time. = We are boarding in an hour.
• Vi var om bord i en time. = We were on board for an hour.

Yes. Danish word order is flexible when you move an element to the front, but then the verb usually stays in second position.

Basic order:

• Vi skal gå om bord på færgen om en time.

You can also front the time phrase:

• Om en time skal vi gå om bord på færgen.

That is also correct and may put more focus on in an hour.

Notice what happens:

• fronted element: Om en time
• finite verb still comes second: skal
• subject comes after the verb: vi

This is a very important Danish pattern.

A careful approximation is:

vee skal goh om bor poh FAIR-gen om en TY-me

A few notes:

• Vi sounds like vee
• skal has a fairly open a
• gå has the å sound, roughly like aw/o
• bord is pronounced more like bor than English board
• færgen has a vowel that English does not have exactly; fair-gen is only an approximation
• time in Danish is two syllables: TI-me

In natural speech, some sounds may be softer or reduced.

No. It is very commonly used for ships and ferries, but it can also be used for other means of transport where English would say board.

For example:

• gå om bord på et fly = board a plane
• gå om bord på toget = board the train

That said, it feels especially natural with ships, ferries, and aircraft. Danish may also use other verbs in some contexts, but gå om bord is a very useful general expression to know.